TW201227764A - Transformer structure - Google Patents

Transformer structure Download PDF

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Publication number
TW201227764A
TW201227764A TW99145384A TW99145384A TW201227764A TW 201227764 A TW201227764 A TW 201227764A TW 99145384 A TW99145384 A TW 99145384A TW 99145384 A TW99145384 A TW 99145384A TW 201227764 A TW201227764 A TW 201227764A
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TW
Taiwan
Prior art keywords
winding
transformer
core
magnetic core
disposed
Prior art date
Application number
TW99145384A
Other languages
Chinese (zh)
Other versions
TWI433177B (en
Inventor
Chun-Ching Yen
Original Assignee
Delta Electronics Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delta Electronics Inc filed Critical Delta Electronics Inc
Priority to TW99145384A priority Critical patent/TWI433177B/en
Publication of TW201227764A publication Critical patent/TW201227764A/en
Application granted granted Critical
Publication of TWI433177B publication Critical patent/TWI433177B/en

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/02Casings
    • H01F27/025Constructional details relating to cooling
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/29Terminals; Tapping arrangements for signal inductances
    • H01F2027/297Terminals; Tapping arrangements for signal inductances with pin-like terminal to be inserted in hole of printed path
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/24Magnetic cores
    • H01F27/26Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/266Fastening or mounting the core on casing or support
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/28Coils; Windings; Conductive connections
    • H01F27/30Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306Fastening or mounting coils or windings on core, casing or other support

Abstract

A transformer structure is disclosed. The transformer structure comprises a winding assembly, a magnetic assembly and an insulating base. The winding assembly comprises a bobbin, a primary winding and a secondary winding, wherein the primary winding and the secondary winding are wound on the bobbin. The magnetic assembly comprises a first magnetic core and a second magnetic core, and the winding assembly is disposed between the first and second magnetic cores. The insulating base comprises a receiving space, at least a heat-dissipating through hole, at least a wall and a plurality of pins. The winding assembly and the magnetic core assembly are disposed in the receiving space of the insulating base. The heat-dissipating through hole is disposed on the wall. The plurality of pins are configured to connect to a first terminal of the primary winding and/or a second terminal of the secondary winding.

Description

201227764 VI. Description of the Invention: [Technical Field of the Invention] [0001] The present invention relates to a transformer structure, and more particularly to a transformer structure having a heat dissipation through hole. [Previous winter treatment] [0002] Transformers are magnetic components that are often used in electrical equipment. They use the principle of electromagnetic induction to convert and adjust the voltage so that the voltage can reach the applicable range of electrical equipment. 0 [0003] Please refer to Figure 1, which is a schematic diagram of the structure of a conventional transformer. The transformer 1 includes a bobbin 10, a main winding, a secondary winding (not shown), and a core group 11, wherein the main winding and the secondary winding are wound on the bobbin 10 separately from each other. The insulating tape 12 is further covered on the main and secondary windings. The first outlet end 131 of the main winding is wound and fixed on the pin 101 extending from the bobbin 10, and the second outlet end 141 of the secondary winding is attached by the sleeve 142. Flying line. The core group 11 is assembled on the bobbin 10 on which the main stage and the secondary winding have been wound, and is partially disposed in the passage Q of the bobbin 10. The periphery of the core group 11 is further covered with a plurality of layers of insulating tape 12, whereby the assembly of the transformer 1 is completed and at the same time the transformer 1 is ensured to comply with electrical safety regulations. The conventional transformer 1 can be electrically connected to a circuit board (not shown) by means of the pin 101 and the second outgoing end 141 of the secondary winding. [0004] However, when the conventional transformer 1 is operated, the temperature of the winding and the core group 11 is greatly increased, and since the insulating tape 12 is wound around the periphery of the core group 11, the transformer 1 is disadvantageous for heat dissipation. The inside of the transformer 1 easily accumulates heat, thereby affecting the operational efficiency and electrical safety of the power supply circuit to which it belongs. 099145384 Form No. A0101 Page 5 / Total 20 Page 0992078211-0 201227764 [Invention] [0005] The purpose of the present invention is to provide a transformer structure, which uses a heat dissipation through hole on the bottom surface of the insulating base body to solve the conventional transformer. During operation, it is easy to avoid the lack of accumulated heat inside the transformer, and to ensure an electrical safety distance between the winding end of the transformer and between the core and the winding end. [0006] In order to achieve the above object, a broader aspect of the present invention provides a transformer structure including: a winding group including a bobbin, a main winding, and a secondary winding, wherein the winding structure is Winding the main winding and the secondary winding, the magnetic anger group, including the first magnetic core and the second magnetic core, wherein the winding group is disposed between the first magnetic core and the second magnetic core; and the insulating base body, The accommodating space includes at least one heat dissipation through hole, at least one wall surface, and a plurality of pins. The accommodating space is configured to receive the winding wire group and the magnetic core group, and the heat dissipation through hole is disposed on the wall surface, and the plurality of pin systems are Connecting the first outlet end of the main winding and/or the second outgoing end of the secondary winding. [Embodiment] Some typical embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It is to be understood that the present invention is capable of various modifications in various aspects, and is not intended to limit the scope of the invention. Please refer to FIG. 2, which is a schematic diagram of a transformer structure according to a preferred embodiment of the present invention. The transformer 2 includes a winding group 20, a magnetic core group 21, and an insulating base 22, wherein the winding group 20 includes a bobbin 23, a main winding 24 and a secondary winding 25, and the bobbin 23 The structure is wound around the main winding 24 and the secondary winding 25, and the main winding 24 and the secondary winding 25 are insulated from each other and stacked on the 099145384. Form No. A0101 Page 6 of 20 0992078211 -0 201227764 Ο [0009] On the bobbin 23. The magnetic core group 21 includes a first magnetic core 211 and a second magnetic core 212, and the winding group 20 is disposed between the first magnetic core 211 and the second magnetic core 21 2 . The insulating base 22 includes an accommodating space 221, at least one heat dissipation through hole 222, at least one wall surface, and a plurality of pins 223. The accommodating space 221 is framed on the receiving winding group 20 and the magnetic core group 21. The plurality of pins 223 are disposed on the first extending portion 2261 of the first sidewall 2251 of the insulating base 22 and the second extending portion 2262 of the second sidewall 2252 (with respect to the first sidewall 2 2 51 of the insulating base 22) And the second sidewall 2 2 5 2, please refer to the description of FIG. 3), and the first outlet end 241 of the main winding 24 of the winding group 20 and the second outgoing end 251 of the secondary winding 25 respectively The first extension portion 2261 and the second extension portion 2262 of the opposite sides of the insulating base 22 are connected to each other. Referring to FIG. 2, the bobbin 23 has a winding area -230, a passage 231, and a first line. The side plate 232 and the second side plate 233 are disposed between the first side plate 232 and the second side plate 233, and are wound around the main winding 24 and the secondary winding 25. The passage 231 extends through the first slab 232, the winding section 230, and the second side panel 232 for accommodating a portion of the core group 21. In the present embodiment, the bobbin 23 is preferably a rhyme; The main winding 24 and the secondary winding 25 are preferably wires having an outer insulating layer. When the main winding 24 and the secondary winding 25 are wound around the winding area 230 of the bobbin 20, the two can be separated by a first insulating medium 261, such as insulating tape, and further, the secondary winding The periphery of the line 25 can also selectively coat the second insulating medium 262 for insulation purposes. The main winding 24 has a first outlet end 241, and the secondary winding 25 has a second outlet end 251, wherein the first outlet end 241 and the second outlet end 251 are oriented in opposite directions from the bobbin 23 The winding area 230 extends out. 099145384 Form No. A0101 Page 7 of 20 0992078211-0 201227764 The core group 21 of the transformer 2 includes a first core 211 and a second core 21 2, in the present embodiment, 'the first core 211 and the second The magnetic core 21 2 is preferably a combination of EE cores, but is not limited thereto. The first magnetic core 211 and the second magnetic core 212 respectively have a connecting portion 2111, 2121, a middle column 2112, 2122 and two side columns 2113, 2123, and the two side columns 2113, 21 2 3 are respectively connected by the connecting portions 2111 ' The opposite sides of the 21 21 extend perpendicularly outwardly, and the center pillars 2112 and 2122 are vertically extended outward from the central regions of the connecting portions 2111 and 2121, respectively, and are respectively disposed between the two side pillars 2113 and 2123. When the first magnetic core 211 and the second magnetic core 21 2 are combined with the winding group 20, the column 2112 of the first magnetic core 211 and the column 2122 of the second magnetic core can be accommodated in the channel 231 of the bobbin 23 The connecting portion 2111 of the first core 211 and the connecting portion 2121 of the second core 212 are respectively attached to the first side plate 233 and the second side plate 23 of the bobbin 23, and the first magnetic The two columns 2113 of the core 211 and the two columns 21 23 of the second core 21 2 may partially cover the periphery of the winding group 20 . In some embodiments, the first magnetic core 211 and the second magnetic core 212 are also selectively adhered to the adhesive medium (not shown), and the winding group 20 is stably disposed on the first magnetic core 211 and The combined structure 27 of the core group 21 and the winding group 2 is formed between the second cores 212. [0010] Fig. 3 is a schematic view showing the structure of the insulating base shown in Fig. 2. As shown in FIG. 2 and FIG. 3, the wall surface of the insulating base 22 includes a first sidewall 2251, a second sidewall 2252, a third sidewall 2253, a fourth sidewall 2254, and a bottom surface 224', wherein the first sidewall 2251 and the first sidewall The two side walls 2252 are oppositely disposed, and the third side wall 2 2 5 3 and the fourth side wall 2 2 5 4 are also oppositely disposed such that the first side wall 2251, the second side wall 2252, the third side wall 2253, and the fourth side wall 2254 and the bottom surface 224 are oppositely disposed. The system defines the accommodating space 221 and the opening 227, 099145384 Form No. A0101 Page 8 / Total 20 pages 0992078211-0 201227764 Ο The opening 227 is disposed opposite to the heat dissipation through hole 222 of the bottom surface 224. The insulating base 22 includes a first extending portion 2261 and a second extending portion 2262. The first extending portion 2261 and the second extending portion 2262 are outwardly extended from the first side wall 2251 and the second side wall 2252, respectively. The plurality of pins 223 are partially embedded in the first extending portion 2261 and the second extending portion 2262, and are oriented by the first extending portion 2261 and the second extending portion 2262 toward the parallel first sidewall 2251 and the second sidewall 2252. extend. The heat dissipation through hole 222 is disposed on the bottom surface 224. Taking the second and third figures as an example, the heat dissipation through hole 222 of the embodiment is disposed on the bottom surface 224 closer to the first outlet end 241 of the main winding 24 . The position and the shape of the heat dissipation through hole 222 may be square or circular, but the position and shape of the heat dissipation through hole in the present case are not limited to the embodiment. ~ [0011] ❹ Refer to Figure 4 and Figure 4, which are schematic diagrams of the combined structure of the transformer shown in Figure 2 at different viewing angles. As shown in FIG. 4, the combination of the magnetic core group 21 and the winding group 20, the structure 27 can be attached to the bottom surface 224 of the insulating base 22 and accommodated in the accommodating space 221 of the insulating base 22. In order to complete the assembly work of the transformer 2. As shown in FIG. 4, when the transformer 2 is assembled, the second core 212 of the core group 21 is attached to the bottom surface 224 of the insulating base 22 and the second magnetic portion is made by the heat dissipation through hole 222. The core 212 is in direct contact with the outside world. In this way, when the changer 2 is operated, the heat accumulated between the second core 212 and the bottom surface 224 of the insulating base 22 when the transformer 2 is operated by the heat dissipation through hole 222 can be dissipated to the outside. The internal temperature of the transformer 2 is lowered to achieve the effect of heat dissipation, and the electrical safety distance between the wire end and the wire end and the wire end is ensured. In addition, since the insulating base 22 is manufactured by plastic injection 099145384 Form No. Α0101 Page 9/20 pages 0992078211-0 201227764, the arrangement of the heat dissipation through holes 222 allows the insulating base 22 to be manufactured. In the process, the purpose of saving materials and reducing costs is achieved. [0012] Please refer to FIG. 5, which is a schematic diagram of the transformer shown in FIG. 4A disposed on a circuit board. As shown in the figure, the transformer 2 is disposed in the circuit board 3, so that the heat generated by the second core 21 2 can be directly radiated through the heat dissipation through hole 222. In this way, when the transformer 2 is operated, the first core 211 can be dissipated by the opening 227 of the insulating base 22, and the accumulated heat of the second core 212 can be dissipated through the heat dissipation through hole 222. Further, the purpose of heat dissipation is achieved, so that the temperature of the transformer 2 is lowered. [0013] In summary, the transformer structure of the present invention is mainly provided with a heat dissipation through hole on the bottom surface of the insulating base body, so that the second magnetic core of the magnetic core group can directly contact with the outside, thereby the second magnetic core and The heat generated between the bottom surfaces of the insulating bases is effectively dissipated to the outside, and the temperature of the transformer is lowered. In addition, in the manufacturing process of the injection molding of the insulating base body, the required material can be reduced due to the arrangement of the heat dissipation through holes, thereby reducing the material cost. [0014] The present invention has been modified by those skilled in the art, and is not intended to be protected as claimed. BRIEF DESCRIPTION OF THE DRAWINGS [0015] Fig. 1 is a schematic view showing the structure of a conventional transformer. 2 is a schematic structural view of a transformer of the preferred embodiment of the present invention. [0017] Fig. 3 is a schematic view showing the structure of the insulating base shown in Fig. 2. 4A and 4B are schematic views showing the combined structure of the transformer shown in FIG. 2 at different viewing angles. 099145384 Form No. A0101 Page 10/Total 20 Page 0992078211-0 201227764 [眶9] Figure 5 is a schematic diagram of the transformer shown in Figure 4A placed on the board [Main component symbol description] [0020] Transformer: 1. 2 [0021] Winding frame: 10, 23 [0022] Pin: 101, 223 [0023] Magnetic core group. 11, 21 [0024] Insulating tape: 12 Ο [0025] First outlet end: 131, 241 Casing: 132, 142 [0027] Second outlet end: 141, 251 [0028] Winding group: 20 [0029] First core: 211 [0030] Second core: 212 ❹ [0031 Connection: 2111, 2121 [0032] Center column: 2112, 2122 [0033] Side column: 2113, 2123 [0034] Insulation body: 22 [0035] Housing space: 221 [0036] Thermal through hole: 222 [ 0037] bottom surface: 224 099145384 Form No. A0101 Page 11 / Total 20 pages 0992078211-0 201227764 [0038] First side wall: 225 1 [0039] Second side wall: 2252 [0040] Third side wall: 2253 [0041 Fourth side wall: 2254 [0042] First extension: 2261 [0043] Second extension: 2262 [0044] Opening: 227 [0045] Winding area: 230 [0046] Channel: 231 [0047] First side panel: 232 [0048] Second side panel: 233 [0049] Main winding 2. 24 [0050] Secondary winding: 25 [0051] First insulating medium: 261 [0052] Second insulating medium :262 [0053] Combination structure: 27 [0054] Board: 3 099145384 Form number A0101 Page / Total 20 pages 0992078211-0

Claims (1)

  1. 201227764 VII. Patent application scope: 1. A transformer structure, comprising: a winding group comprising a winding frame, a main winding and a primary winding, wherein the winding frame is wound around the main winding a line and a secondary winding, a core group including a first core and a second core, wherein the winding group is disposed between the first core and the second core, and a The insulating body includes an accommodating space, at least one heat dissipation through hole, at least one wall surface, and a plurality of pins, and the accommodating space receives the winding group and the magnetic core group, and the heat dissipation through hole is disposed on the In the wall, the plurality of pins are connected to a first outlet end of the main winding and/or a second outlet end of the secondary winding. 2. The transformer structure of claim 1, wherein the transformer is disposed on a circuit board. 3. The transformer structure of claim 1, wherein the bobbin includes a winding area, a passage, a first side panel and a forbidden side panel, wherein the winding zone is disposed at the first Between the side plate and the second side plate, the main winding and the secondary winding are wound around the first side plate, the winding area and the second side plate for The magnetic core group of the housing portion. 4. The transformer structure of claim 1, wherein the first magnetic core and the second magnetic core of the magnetic core group respectively have a connecting portion, a middle column and two side columns, wherein each of the The two side pillars respectively extend perpendicularly outwardly from opposite sides of each of the connecting portions, and each of the middle pillars respectively extends perpendicularly outward from a central region of each of the connecting portions and are respectively disposed on each of the two side pillars. between. 5. The transformer structure of claim 4, wherein the first magnetic 099145384 form number A0101 page 13 / total 20 page 0992078211-0 201227764 core middle column and the second magnetic core column Receiving in the channel of the bobbin, the connecting portion of the first core and the second core are respectively attached to the first side plate and the second side plate of the bobbin, and the The two side pillars of a magnetic core and the two side pillars of the second magnetic core are partially wrapped around the outer circumference of the winding group. The transformer structure according to claim 1, wherein the insulating base The wall surface includes a first side wall, a second side wall, a third side wall, a fourth side wall and a bottom surface, wherein the first side wall is opposite to the second side wall, the third side wall and the first side wall The four side walls are oppositely disposed, and the first side wall, the second side wall, the third side wall, the fourth side wall and the bottom surface are defined to form the accommodating space and an opening. The transformer structure of claim 6, wherein the insulating base further comprises a first extending portion and a second extending portion, wherein the first extending portion and the second extending portion are respectively A side wall and the second side wall extend outwardly, and the plurality of pin portions are embedded in the first extension portion and the second extension portion. 8. The transformer structure of claim 6, wherein the heat dissipation through hole of the insulating seat is disposed on the bottom surface of the insulating base such that the opening is opposite to the heat dissipation through hole. 9. The transformer structure of claim 8, wherein the heat dissipation through hole of the insulating seat is disposed on the bottom surface of the insulating seat closer to the first outgoing end of the main winding. position. 10. The transformer structure of claim 8, wherein the second magnetic core of the magnetic core group is attached to the bottom surface of the insulating base. 099145384 Form No. A0101 Page 14 of 20 0992078211-0
TW99145384A 2010-12-22 2010-12-22 Transformer?structure TWI433177B (en)

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TW99145384A TWI433177B (en) 2010-12-22 2010-12-22 Transformer?structure
US13/282,625 US8736411B2 (en) 2010-12-22 2011-10-27 Transformer structure

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TWI433177B TWI433177B (en) 2014-04-01

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CN103797551A (en) * 2012-09-11 2014-05-14 株式会社小松制作所 Transformer and method for manufacturing case therefor
CN104425117A (en) * 2013-08-29 2015-03-18 三星电机株式会社 Transformer and power supply device including the same
US10559418B2 (en) 2017-06-07 2020-02-11 P-Duke Technology Co., Ltd. Inverter structure and method for assembling the same
US10991501B2 (en) 2013-08-29 2021-04-27 Solum Co., Ltd. Transformer and power supply device including the same

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CN102857088B (en) * 2012-08-28 2016-01-20 胜美达电机(香港)有限公司 Power supply module
GB2511844B (en) * 2013-03-15 2015-12-23 Eisergy Ltd A magnetic component for a switching power supply and a method of manufacturing a magnetic component
TWI511260B (en) * 2013-07-02 2015-12-01 Wistron Corp Electronic signal transmitting device and integrated circuit thereof
JP6320708B2 (en) * 2013-08-30 2018-05-09 Fdk株式会社 Winding parts
US20150279547A1 (en) * 2014-04-01 2015-10-01 Samsung Electro-Mechanics Co., Ltd. Coil component and manufacturing method thereof
JP6318798B2 (en) * 2014-04-11 2018-05-09 株式会社デンソー Reactor
US10408865B2 (en) 2014-11-07 2019-09-10 GRID20/20, Inc. Power monitor protective shroud
CN205282221U (en) * 2015-12-08 2016-06-01 光宝电子(广州)有限公司 Transformer bearing and use electron device of this transformer bearing
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TW200807462A (en) * 2006-07-28 2008-02-01 Delta Electronics Inc Transformer with insulating structure
JP2008112753A (en) * 2006-10-27 2008-05-15 Tdk Corp Lateral low-profile coil part, and soldering method of its winding terminal
US7446637B1 (en) * 2007-10-18 2008-11-04 Fsp Technology Inc. Parent-child leadframe type transformer
TWI351042B (en) * 2008-07-15 2011-10-21 Delta Electronics Inc Combination structure of circuit carrier and transformer
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CN103797551A (en) * 2012-09-11 2014-05-14 株式会社小松制作所 Transformer and method for manufacturing case therefor
CN103797551B (en) * 2012-09-11 2016-08-17 株式会社小松制作所 Transformator and the manufacture method of housing thereof
CN104425117A (en) * 2013-08-29 2015-03-18 三星电机株式会社 Transformer and power supply device including the same
US9824810B2 (en) 2013-08-29 2017-11-21 Solum Co., Ltd. Transformer and power supply device including the same
US10163554B2 (en) 2013-08-29 2018-12-25 Solum Co., Ltd. Transformer and power supply device including the same
US10312012B2 (en) 2013-08-29 2019-06-04 Solum Co., Ltd. Transformer and power supply device including the same
US10658101B2 (en) 2013-08-29 2020-05-19 Solum Co., Ltd. Transformer and power supply device including the same
US10991501B2 (en) 2013-08-29 2021-04-27 Solum Co., Ltd. Transformer and power supply device including the same
US10559418B2 (en) 2017-06-07 2020-02-11 P-Duke Technology Co., Ltd. Inverter structure and method for assembling the same

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Publication number Publication date
US8736411B2 (en) 2014-05-27
US20120161913A1 (en) 2012-06-28
TWI433177B (en) 2014-04-01

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